Slope equation :
m = y₂-y₁/x₂-x₁
We are given the following points :
(-1, 7) & (4, -1)
Simply plug everything in :)
m = y₂ - y₁ / x₂ - x₁
Plug in :)
m = -1 - 7 / 4 + 1
Simplify.
m = -8 / 5
So, the slope is -8/5
The first answer choice is correct.
~Hope I helped~